Method for producing 4-(2'-methoxyethyl) phenol
CA 2036498 A1 · Owner: Mueller, Werner, H. · Inventors: Strutz, Heinz; Mueller, Werner, H.; Smith, Brad L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method for producing 4-(2'methoxyethyl)phenol by brominating 4-hydroxyacetophenone to produce alpha-bromo-5-hydroxyacetophenone and then, causing a methoxide-bromide exchange to thereby produce alphamethoxy-4-hydroxyacetophenone; and then conducting a single step reduction of alpha-methoxy-4-hydroxyacetophenone with at least two equivalents of hydrogen per equivalent of alpha-methoxy-4hydroxyacetophenone in the presence of a hydrogenation catalyst to thereby directly produce 4-(2'-methoxyethyl)phenol.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 18, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.